<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>

<body>
    <div id="wrap">
        <p>{{name | filtername }}</p>
        <button @click="changname">change name</button>
    </div>
</body>
<script>



    new Vue({
        el: '#wrap',
        data: {
            name: '张三',
        },
        methods: {
            changname() {
                this.name = '李四'
            }
        },
        filters: {
            filtername(data) {
                console.log(data, '过滤器触发了')
                return data + 'wow~~'
            }
        }

    })
    new Vue({})
</script>

</html>